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Machines Problems Guides Ingredients

Machines Problems Guides Ingredients

Search real manufacturing machine problems and get clear, step-by-step answers: causes, fixes, checks and prevention for capsule filling, blending, bottling and more.

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Answers here are general guidance. Always follow your own site procedures, the machine manual and your safety rules — isolate and lock out before working on any machine.

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PLC Input Signal Failure — Capsule Filling · Ask Dhanu

Machines Capsule Filling Electrical, PLC, Sensors & Safety Alarms

Problem & answerH-08

PLC Input Signal Failure

Likely causes

Faulty sensor
Broken wiring
Input module failure

How to fix it

1Check the sensor.
2Measure the input signal.
3Inspect the wiring.
4Replace a faulty input module if required.

It is fixed when

Input status changes correctly when the sensor is activated.

Stop it coming back

Test PLC inputs during scheduled maintenance.

Did this solve the problem?

Points to inspect

Input module
Sensor
Wiring

More in Electrical, PLC, Sensors & Safety Alarms

H-01Power Failure
H-02Circuit Breaker Tripped
H-03Fuse Blown
H-04Emergency Stop Activated
H-05Safety Door Open Alarm
H-06PLC Alarm Active
H-07Automatic Pause Keeps Triggering
H-09PLC Output Failure

H-10

PLC Communication Error

H-11HMI Screen Not Responding

H-12Photoelectric Sensor Failure

H-13Proximity Sensor Failure

H-14Encoder Failure

H-15Inverter (VFD) Fault

H-16Loose Electrical Connection

H-17Control Panel Overheating

H-18Ground Fault Detected

General guidance only. Follow your site procedures and the machine manual, and isolate the machine before any work on it.